elharo comments on Solved Problems Repository - Less Wrong

25 Post author: Qiaochu_Yuan 27 March 2013 04:51AM

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Comment author: ThrustVectoring 27 March 2013 09:30:23AM 9 points [-]

As far as I can tell, ketogenic diets solve the problem of fat loss. I know, anecdotes are not data, but it's worked wonders for everyone I know who's tried it (myself included).

Err on the side of posting solutions which may not be universal but are still likely to be helpful to many people.

This is the sole reason I'm posting this. Keto works for very many people. The short story of keto is that your brain can only eat certain kinds of chemicals. Glycogen from eating carbohydrates is one of them. Ketones generated from fat is another. Your body will preferentially use the first over the second, since turning fat into ketones is expensive. So if you eat few enough carbs (<30g per day is the figure I remember) and plenty enough fat (2:1 fat to protein is what I heard), your body will eventually start doing chemistry that turns dietary and body fat into ketones.

There's some more practical advice about how to induce ketosis quickly (muscles store glycogen, so exercise helps) and how to make low-carb versions of foods you enjoy, but that's pretty much the gist of it.

Comment author: elharo 27 March 2013 05:31:12PM *  2 points [-]

Worked for me, though I have been plateaued for the last year a few pounds and several waste inches above where I'd ideally like to be. Haven't figured out how to bust through that yet.

I strongly suspect that when we do figure this out, ketogenesis will be a large part of any eventual solution, but I don't think we have all the answers yet.

I do know folks for whom low carb diets failed, but in all cases I'm personally familiar with that's because they couldn't maintain them. (which is a strike against low-carb diets, of course; an unmaintainable diet isn't useful) I know of one case of someone who took off 150+ pounds using low-carb and then put 50 or so pounds back on while continuing low carb. Still he never came close to getting back to where he was pre-low-carb. I'm curious if anyone has simply failed to lose weight while maintaining a low carb diet. I think Atkins talked about this possibility in the last edition of his diet book he authored. I'll have to look up the citation, but there are some medical conditions that can cause weight gain/prevent weight loss that show up in a few percent of patients.

Comment author: DerBerggeist 29 March 2013 08:33:49PM 0 points [-]

Err, have you been lowering calorie intake relative to your activity and changing metabolic rate? Lighter bodies require less energy both to maintain and move around. If you haven't been adjusting your "dieting" diet it's no wonder you plateaued, because where initially you ran a caloric deficit you're now much closer to equilibrium.

Also, I've intentionally gained weight on cyclical low-carb diets (<5 g carbs each weekday, 1200-1500g carb-up on weekends). It's because I ate a lot.